My Intel iMac arrived on Tuesday and I have been playing with it ever since. Overall it is working out really well, it is snappy when running Intel/Universal binaries and the screen quality is superb. The extra 512meg of RAM has not arrived yet so it is hard to judge performance but it is very promising. At the moment it kind of feels like you are driving a Formala One car with the tires borrowed from the family sedan, whilst Intel binaries run very nicely Rosetta is very slow especially when two or more legacy binaries are open at once. I have a feeling however that the extra RAM will help a lot with this.